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Expertise under pressure

A complex world, virtually present in any industry,

requiring thorough knowledge and technical skills

Pressure Equipment

Pressure equipment is widely diffused in the industry, from the small air receiver of the local carpentry shop, to the very big refinery reactor or the complex piping systems typical of large industrial plants.

The European 2014/68/UE Directive provides the requirements for design, fabrication and test of pressure equipment manufactured and traded within the European Union. On the other hand, the national jurisdiction of the state members defines the mandatory rules for pressure equipment users, including those related to in-service inspections and safe operation.

Studio Scano is able to provide specialized consulting services in the field of pressure equipment: from structural integrity and Fitness-For-Service, to new equipment design and high-end scientific research.


The Fitness-For-Service methodology is a multidisciplinary approach aimed at rationally determining if a pressure component can be operated, and how long, under one or several damage mechanisms. Hence, equipment Maximum Allowable Working Pressure (MAWP) and residual life are the main purpose of a Fitness-For-Service assessment.

A FFS evaluation usually involves diverse technical figures: NDT personnel, material, process and integrity engineers, FEM/FEA analysts.

From one of the first standards introduced in the petrochemical sector (API RP 579), the Fitness-For-Service method has rapidly grown in popularity in other fields of the industry with the publication of the API 579-1 / ASME FFS-1 by a joined ASME/API committee.

Many studies demonstrated how the FFS approach is cost-effective: it can prove equipment safe operation margins, avoiding users all the additional costs due to failures and forced outages, and can provide a rational basis for maintenance management.

Typical scenarios that highlight Fitness-For-Service effectiveness:

“We discovered a metal loss well under the design limits on a pressure vessel during periodic inspections, can we still operate it? At what conditions? Is a recontrol mandatory? When?”

“NDTs reported there’s a flaw on a pressure member, can we still operate it? How long? What’s the MAWP?”

“A pipe was mechanically dented and it’s visibly deformed, can we wait until next programmed stop?”

“We have a pressure vessel that was caught in a fire, can we put it back into service?”

“Our superheater finished its design creep hours, can we extend its operating life?”

The FFS methodology can also be harmonized with the European global and National jurisdiction dealing with the mandatory periodic inspections on pressure vessels and piping, thus providing a sound basis for the integrity evaluation of the equipment.

In Studio Scano we are convinced that the Fitness-For-Service approach, along with a thorough investigation of the potential damage mechanisms, the proper NDTs, and the most recent analysis tools and techniques, can be a valuable service for all the companies dealing with aging pressure plants.

Safe management of pressure equipment

  • Management of periodic inspections
  • Damage mechanism identification
  • Definition of control plans and NDTs
  • 3D modeling of industrial pressure plants
  • API 579-1 Fitness-For-Service assessments
  • Design of alterations and repairs of pressure equipment
  • Analysis of high temperature components: creep damage
  • Residual life and extended operation of equipment


Studio Scano can perform the design of new pressure equipment using the classic approach by formulas or the more modern methodologies by FEM analysis and according to all the principal international codes and standards (EN, ASME,  AD2000, CODAP, PD5500, etc.)

Typical provided services include:

  • PED classification of pressure vessels, piping and assemblies
  • design of safety devices and rational management of plants
  • stability calculations of pressure vessels (DBF/DBA)
  • advanced calculations: fatigue, creep, creep/fatigue
  • ASME Certifying Engineer: UDS and MDR
  • piping stress analysis
  • PED documentation for CE marking of pressure equipment
  • mechanical drawings, P&IDs and plant layouts

Studio Scano employs some of the most advanced software for pressure equipment modeling, design and analysis:

Scientific research

Pressure equipment structural analysis, especially when exposed to extreme operating conditions, requires high-level engineering knowledge and continous training and education.

Studio Scano constantly contributes to the scientific research in the pressure equipment field, with national and international publications and important collaborations with major research institutes. An example is italian INAIL – DIT in Rome, where an extensive work is taking place about the national procedures for the evaluation of components in the creep regime. Moreover, Studio Scano has a partnership since 2019 with the University of Naples “Federico II”, organizing seminars about pressure equipment advanced calculation and with international publications regarding creep modeling and its impact on components residual life.

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